Beater for mixing-machines.



, D, Hmmm BEAIIFOR MIXING IJIACHINESx APPLICAI'ION FILED FEB. l5, 1918.

' 191237 MTL I Patented Dec. 17, 1918.

. Y a V Vini/ BRYAN D. PINKNY, OF CINCINNATI, OHIO.

BlElA'llllR FOR MIXING-MACHINES.

Specification of Letters Patent.

Application filed February 15, 1918. Seri-al No. 217,319.

T 0 @ZZ w hom 'it may concern:

Be it known that I, BRYAN D. PINKNEY, a

citizen of the/United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Beater for Mixing-Machines, of which the following is a specification.

My invention relates to improvements 1n a whip or beater for mixing machines of the type disclosed in Patent No. 1,085,730, and is employed for whipping or beating eggs, cream, marshmallow or other materials requiring whipping7 beating or creaming.

One of the objects of my invention is to pro/vide a device that is composed of a series of beater-wires which may easily be removed for repairs, and clamp-plates, to hold the beater-wires, of simple, efficient and durable construction, having fiexible or yielding qualities to allow the beater-wires tok be rmly clamped and s clamp-plates.

A further object of my invention is to provide an intermediate spreader-ring to hold the beater-wires in correct alinement and prevent distortion of the beater, and at the same time hold the beater-wires to a predetermined perimeter and assure great rigidity with a maximum of flexibility.

To the accomplishment of the above and related ends, said invention, then, consists ofthe means hereinafter fully described and particularly pointed out in the claims.

The annexedA drawing and the following description set forth in detail'- certain con-A struction embodying the invention, said disclosed means constituting, however, but one of the various forms in which the principle of the invention may be used.

In said drawing, Figure front elevation of the whip or 1 illustrates a beater; Fig.

2, a partial cross-section of the same taken at line 1-1, Fig. 1; Fig. 3, a plan view.

Similar letters refer to similar parts throughout the several figures. f

Referring to the drawing, A represents the shank of the beater, constructed in the form of a sleeve at the upper end and in the form of a circular outer clamp-plate at the lower end. I have shown the surface d as having aI regular concaved inner clamp surface, although I do not limit my invention to this particular regular curved' construc-v tion since an irregular curved clamp surface will be equally as satisfactory if very soft beater-wires are used or employed. There ecured between the is a central opening b which is adapted to receive a vertically disposed driving shaft of a mixing machine, and there 'are engaging lugs a to which rotative power is apratentea'nea iv, isis.

plied from a mixing machine of any famillar construction, and hence not shown in the drawing. A circular conveXed-inner clampplate B, with a corresponding outer surface e, fits in the shank A, and is secured theretov by a plurality of 'clamp screws E, fitting loosely in holes f in shank A, and fastened in tap-holes g of inner clamp-plate B. The space between the surface (l of the. shank A and the surface e of the inner clamp-plate B is less than the diameter of the beater; wires C, so that a clamping action results, the pressure exertedv to clamp screws E distorting the ends of the beater-wires C and forcing them to assume the same shape as the-resulting space between the surfaces d and e. t.

A series of bent beater-wires C are formed -into bow-shaped loops, each loop crossing ing loose and falling out, which is the great drawback common type. or may be provided with notches or serrations to serve as spacers for the beaterwires C.

The spreader-ring D serves as an intermediate spacer for the. beater-wires C at the greatest perimeter, and at the sameitime holds said beater-wires to the predetermined beater size, and combines'flexibility with rigidity, since the beater-wires are heldin constant relation to each other.

The amount of concave to inner surface 0l of the shank A is determined from the moment of elasticity of the material entering to beaters of applicants .into the manufacture of beater-wires C.

Usually, tempered steel wire lis used,.and as this is very hard, it requires very little curved clamping surface to secure iii-the softerthe metal used in the beater-wires the greater the amount of curved clamping sur- The surfaces d and e may be smooth,-

face necessary. Medium-hard wire is preferable in the construction of my improved beater. i

Other modes of applying the clamping principle of my invention may be employed instead of the one explained, change being made as regards the shape -of the shank A and the inner clamp-plate B, provided the means statedv by the following claims or the equivalent of such stated means be employed.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, isl l. A beater for mixing machines, comprising a series of'exible beater-Wires disposed in the forinof loops and having iiormally straight flexible ends, and means for bending aportion of said straightends in a curved form between circular clamp-plates for the purpose of rigidly securing them due to the elastic" tension ofthe bent flexible beater-wire ends, substantially as described.

2. A beater for mixing machines wherein flexible beater-wires disposed in the form of loops having plain straight ends are employed; rigidly securing said plain straight beaterwire ends so that the pressure of said circular curved clamp-means sufficiently bends and distorts the normal straight plain ends of the beater-wires that they are clamped rigidly in place and'held by the elastic tension of said lexible'material in beater-wires, independently of bent ends on the wires or engaging holes in said clamp-means; and a shank for operating purposes integral with a part of said clamp-means.

3. A beater for mixing machines,compris ing a driving shank with an enlarged circular curved clamp-means -at thelower end ofsaid shank; a series of fiexible beatercircular curved clamp-means for' Wires disposed in the form of loops having their normal straight ends terminate in said circular clamp-means; and tension means for distorting 'said normal straight ends so that they are secured in the said circular curved clainp-means, said curved l'distortion not to exceed the elastic limit of the flexible material that the distorted ends may assume their normal straight condition when said means for distorting is released, so that any of the flexible beater-wires may be removed by releasing said tension means.

4. A beater for mixing machines, comprising a driving shank with an opening at its upper end to engage a driving shaft and an enlarged outwardly-projecting circular concaved outer clamp-plate at its lower end;

a circular convexed inner clamp-plate fitted in but of less periphery than said outer clamp-plate so that a clamp-space for beater-wires results; a series of flexible beater-wires with plainends disposed in the loops having their normal plain I my hand in presence of two subscribing Witnesses. f u

BRYAN DPINKNEY.

Witnesses:

CHARLES HERZOG, AUGUST B. MOENING.

between said cir- 

